Synthesis,Structures And Properties Of Copper(?) Alkynyl Compounds

In spite of the lower cost and ready availability of copper,the syntheses,structures and properties of Cu(I)complexes remain a challenge due to the redox instability of the Cu(I)ions in the air.As the useful chemical,optical and electrical properties of Cu(I)complexes,efforts on broadening their applicability in various fields such as catalysts,chemical sensors,biological imaging agents,and electronic devices have increased in recent years.In this thesis,we synthesized a series of copper(I)alkynyl clusters and polymers.These structures of copper(I)alkynyl clusters were determined by single crystal X-ray diffraction.The morphology and self-assembly process of copper(I)alkynyl polymers were studied.The photocatalytic performance of copper(I)alkynyl polymer-based composites was explored.The main contents of this thesis are summarized as follows:(1)Four new copper(I)alkynyl clusters were synthesized by comproportionation and condensation reactions,respectively,[Cu₁₄(^tBu C?C)₁₀(HCOO)₄]·C₆H₁₄(1)[Cu₁₄(^tBu C?C)₁₀(CH₃COO)₄]·^tBu C?CH(2)[Cu₁₅(^tBu C?C)₁₀(C₆H₅COO)₅](3)[Cu₂₀(ⁱPr C?C)₁₂(hfac)₈](4)Two auxiliary ligands,such as carboxylic acids and hexafluoroacetylacetone,were used to regulate the structure of copper(I)alkynyl clusters.(2)A series of morphologies of different copper(I)alkynyl polymers were prepared by reacting Cu Cl₂·2H₂O with 1-dodecyne and 1-chloro-4-ethynylbenzene,respectively.The morphology and size of copper(I)alkynyl polymers are mainly controlled by the amount of triethylamine and other conditions.In addition,the fluorescence and UV-visible absorption of nanoparticles and microflowers based on copper 1-dodecyne polymers were characterized,and it was found that the strong fluorescence emission of nanoparticulate copper(I)alkynyl polymer at 485nm originated from its size effect.(3)The(NH₄)₂Mo₃S₁₃/Ph C₂Cu composites photocatalyst were prepared by solvothermal method,and the products have been characterized.These composite products were used for photocatalytic degradation of methyl orange.The experimental results showed the1wt%(NH₄)₂Mo₃S₁₃/Ph C₂Cu composite has excellent photocatalytic activity.